林業無線對講系統解決方案

行業背景 

林(lin)業系(xi)統(tong)承擔(dan)著保(bao)護國家森林(lin)資源(yuan)以及促進(jin)林(lin)業經濟健康發展的(de)重要責任。我(wo)國的(de)林(lin)區具有(you)集(ji)中(zhong)性(xing)強和單位(wei)面積廣袤的(de)特點(dian)，一旦(dan)發生災(zai)害性(xing)事故，需要緊急(ji)時(shi)間排查危(wei)險源(yuan)并對危(wei)險區域進(jin)行定位(wei)。林(lin)業工作對于通信的(de)需求日益突出。

林(lin)業通(tong)(tong)(tong)信(xin)(xin)(xin)系統(tong)建(jian)(jian)設(she)以數(shu)字(zi)超短波技(ji)術(shu)(shu)、無(wu)線(xian)(xian)(xian)鏈路組網(wang)技(ji)術(shu)(shu)、視頻傳輸技(ji)術(shu)(shu)等形成的(de)通(tong)(tong)(tong)信(xin)(xin)(xin)網(wang)絡為基礎，著力構建(jian)(jian)空中與(yu)地面(mian)、有線(xian)(xian)(xian)與(yu)無(wu)線(xian)(xian)(xian)、固定(ding)與(yu)機(ji)動相結合(he)的(de)鏈式(shi)、立體(ti)應(ying)急通(tong)(tong)(tong)信(xin)(xin)(xin)系統(tong)，全面(mian)提高(gao)森(sen)(sen)林(lin)防火通(tong)(tong)(tong)信(xin)(xin)(xin)的(de)覆蓋率和傳遞率，確保(bao)在(zai)發(fa)生森(sen)(sen)林(lin)火災(zai)時(shi)，能夠使用多種通(tong)(tong)(tong)信(xin)(xin)(xin)手段(duan)保(bao)障火災(zai)信(xin)(xin)(xin)息傳輸暢通(tong)(tong)(tong)，從而(er)最|大限度(du)減少森(sen)(sen)林(lin)火災(zai)的(de)損失程(cheng)度(du)。

為(wei)解決(jue)林業(ye)工(gong)作日益增長的通信需求，提升林業(ye)工(gong)作者的工(gong)作效率，達到統一指揮的目的，海(hai)能達專(zhuan)門為(wei)林業(ye)用戶提供了(le)一套滿足全省聯網、可(ke)靠(kao)性(xing)高、使用簡單、功能強大的數字(zi)無(wu)線通訊系(xi)統——數字(zi)IP互聯系(xi)統和PDT數字(zi)同播(bo)系(xi)統。

解決方案

通(tong)(tong)過仔細(xi)研究分析林(lin)業用戶通(tong)(tong)信(xin)需求，提供了一套完善的(de)數(shu)字無線通(tong)(tong)信(xin)系(xi)統(tong)解決方案。森林(lin)防(fang)火(huo)數(shu)字超短波無線通(tong)(tong)信(xin)通(tong)(tong)過建(jian)設(she)省(sheng)、市(shi)級(ji)(ji)調度管(guan)(guan)理(li)控(kong)制(zhi)中心(xin)(xin)，縣(xian)（區(qu)、市(shi)）二級(ji)(ji)調度中心(xin)(xin)，在重(zhong)點森林(lin)防(fang)火(huo)地(di)(di)區(qu)（山區(qu)）建(jian)設(she)固定基站(zhan)，移動基站(zhan)，軟(ruan)件管(guan)(guan)理(li)平臺構建(jian)綜合性的(de)無線通(tong)(tong)信(xin)系(xi)統(tong)，形(xing)成(cheng)全(quan)省(sheng)聯網(wang)的(de)省(sheng)、市(shi)、縣(xian)（區(qu)、市(shi)）三(san)級(ji)(ji)森林(lin)防(fang)火(huo)指(zhi)揮(hui)調度網(wang)絡(luo)框架，在系(xi)統(tong)覆蓋范(fan)圍內，能夠(gou)確保全(quan)省(sheng)的(de)通(tong)(tong)信(xin)并且(qie)以縣(xian)（區(qu)、市(shi)）及林(lin)場為單位(wei)建(jian)立(li)多個子網(wang)，各子網(wang)可以單獨(du)通(tong)(tong)信(xin)且(qie)不占用其他子網(wang)的(de)信(xin)道(dao)資源。省(sheng)、市(shi)、縣(xian)（區(qu)、市(shi)）級(ji)(ji)調度管(guan)(guan)理(li)控(kong)制(zhi)中心(xin)(xin)對(dui)(dui)所轄范(fan)圍內各地(di)(di)森林(lin)防(fang)護(hu)人員終(zhong)端進(jin)行遠(yuan)程(cheng)調度管(guan)(guan)理(li)，包括呼叫(jiao)控(kong)制(zhi)功能（個呼、組(zu)呼、全(quan)呼、緊急報警等），數(shu)據(ju)應用管(guan)(guan)理(li)（短信(xin)息發送、GPS定位(wei)信(xin)息、考勤(qin)管(guan)(guan)理(li)等），同時，系(xi)統(tong)可通(tong)(tong)過IP網(wang)絡(luo)對(dui)(dui)各基站(zhan)的(de)運行狀態進(jin)行檢(jian)查并且(qie)維護(hu)基站(zhan)配置(zhi)參數(shu)。

PDT同播系統

PDT同播系(xi)(xi)(xi)統(tong)(tong)(tong)是一(yi)種分區覆(fu)蓋的廣域通信(xin)系(xi)(xi)(xi)統(tong)(tong)(tong)，借助(zhu)于多個(ge)基站(zhan)實現(xian)比單(dan)基站(zhan)系(xi)(xi)(xi)統(tong)(tong)(tong)更廣闊的通信(xin)覆(fu)蓋范(fan)(fan)圍，系(xi)(xi)(xi)統(tong)(tong)(tong)中各(ge)個(ge)基站(zhan)接收頻率(lv)及發射頻率(lv)一(yi)致，因(yin)此系(xi)(xi)(xi)統(tong)(tong)(tong)的頻譜利用(yong)(yong)(yong)(yong)率(lv)高，移動(dong)用(yong)(yong)(yong)(yong)戶在跨(kua)基站(zhan)漫游時(shi)不(bu)(bu)用(yong)(yong)(yong)(yong)越(yue)區切(qie)換，不(bu)(bu)用(yong)(yong)(yong)(yong)進行位置(zhi)登記(ji)，也不(bu)(bu)存在掉(diao)話(hua)現(xian)象。整(zheng)個(ge)系(xi)(xi)(xi)統(tong)(tong)(tong)不(bu)(bu)像集群蜂窩(wo)小區通信(xin)那樣需要復雜的信(xin)令系(xi)(xi)(xi)統(tong)(tong)(tong)，系(xi)(xi)(xi)統(tong)(tong)(tong)結構(gou)簡單(dan)，適(shi)用(yong)(yong)(yong)(yong)于林業用(yong)(yong)(yong)(yong)戶占用(yong)(yong)(yong)(yong)頻率(lv)資源少、覆(fu)蓋范(fan)(fan)圍大、通信(xin)業務量(liang)低的應用(yong)(yong)(yong)(yong)。 

數字IP互聯系統

IP 互聯的基本原理是通過基于(yu)(yu)TCP/IP協議的以(yi)太網將分散(san)的多個中轉(zhuan)臺連接(jie)起(qi)來，從而實現更廣的通信(xin)覆蓋(gai)范圍(wei)(wei)。系統結(jie)構簡(jian)單，適用于(yu)(yu)林業用戶(hu)大范圍(wei)(wei)多基站組網應用。

特點：

?均能提供(gong)豐富的業務功能，如：單(dan)呼(hu)/組(zu)呼(hu)/全(quan)呼(hu)/模數(shu)兼容/緊急(ji)呼(hu)叫/緊急(ji)報警/遙暈(yun)/遙斃/終(zhong)端(duan)檢查/環境監聽/故(gu)障(zhang)弱化等；

?均采用全(quan)IP組網，支持多種傳輸鏈路（IP、E1、無(wu)線鏈路等）；

?終(zhong)端(duan)可以無縫(feng)漫游，打火救(jiu)援使用(yong)方便；

?調度(du)多極化，支持(chi)分層分級管(guan)理；

?完善的互聯互通(tong)功能(neng)，系統可以通(tong)過(guo)各種網(wang)關來(lai)與其他系統互聯；

 ?支(zhi)持星(xing)型(xing)(xing)、串(chuan)型(xing)(xing)、樹型(xing)(xing)、環(huan)型(xing)(xing)等多(duo)種組(zu)網形態

?提(ti)供二次(ci)開發(fa)(fa)接(jie)口，便于用戶進行(xing)個性開發(fa)(fa)，擴展更(geng)多種類的數據應用業(ye)務；

?PDT同(tong)播(bo)系統(tong)全(quan)網只需一對頻點，解(jie)決林(lin)區(qu)多站建設(she)頻點資(zi)源緊張的問題(ti)，可(ke)有效解(jie)決信(xin)號在重疊覆(fu)蓋區(qu)的同(tong)頻干擾問題(ti)，實現全(quan)省林(lin)業系統(tong)通信(xin)覆(fu)蓋；

方案拓撲圖